Leading manufacturer of professional test and measurement instruments including thermal imagers, multimeters, clamp meters, and laser distance tools.
CEM (Shenzhen Everbest Machinery Industry Co., Ltd.) is a specialized high-tech enterprise engaged in the research, development, and production of test and measurement instruments. Established in 1991, CEM has built a comprehensive portfolio of precision tools including thermal imagers, infrared thermometers, digital multimeters, clamp meters, insulation testers, electrical installation testers, and laser distance meters.
Known for innovation and reliability, CEM instruments serve a wide range of industries such as electronics, HVAC, construction, and power utilities. The company's products are designed to meet rigorous safety standards, often featuring ruggedized casings (IP54/IP67) and user-friendly interfaces suitable for both professional engineers and technicians globally.
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Most CEM hand-held instruments, such as the DT-350H clamp meter, use standard 1.5V AAA batteries or a single 9V (NEDA 1604) battery. Refer to the specific user manual for the correct battery type and installation polarity.
'OL' stands for Over Load or Over Limit. This indicates that the measured value exceeds the currently selected range. If you are in manual ranging mode, switch to a higher range.
Many CEM laser distance meters, such as the LDM-110H series, are rated IP54, which means they are protected against dust ingress and water splashes. However, they are not fully submersible.
On most CEM devices, press the 'HOLD' button to freeze the current reading on the LCD display. A 'HOLD' icon will appear. Press the button again to return to real-time measurement.